DE2815335A1 - Pleochroitische farbstoffe und mit diesen verwendbare elektrooptische anzeigevorrichtungen - Google Patents

Pleochroitische farbstoffe und mit diesen verwendbare elektrooptische anzeigevorrichtungen

Info

Publication number
DE2815335A1
DE2815335A1 DE19782815335 DE2815335A DE2815335A1 DE 2815335 A1 DE2815335 A1 DE 2815335A1 DE 19782815335 DE19782815335 DE 19782815335 DE 2815335 A DE2815335 A DE 2815335A DE 2815335 A1 DE2815335 A1 DE 2815335A1
Authority
DE
Germany
Prior art keywords
dye
liquid crystal
electro
pleochroic
mixture
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
DE19782815335
Other languages
German (de)
English (en)
Other versions
DE2815335C2 (fr
Inventor
William A Huffman
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
3M Co
Original Assignee
Minnesota Mining and Manufacturing Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Minnesota Mining and Manufacturing Co filed Critical Minnesota Mining and Manufacturing Co
Publication of DE2815335A1 publication Critical patent/DE2815335A1/de
Application granted granted Critical
Publication of DE2815335C2 publication Critical patent/DE2815335C2/de
Granted legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B1/00—Dyes with anthracene nucleus not condensed with any other ring
    • C09B1/16—Amino-anthraquinones
    • C09B1/20—Preparation from starting materials already containing the anthracene nucleus
    • C09B1/205—Dyes with an unsaturated C on the N atom attached to the nucleus
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K19/00—Liquid crystal materials
    • C09K19/52—Liquid crystal materials characterised by components which are not liquid crystals, e.g. additives with special physical aspect: solvents, solid particles
    • C09K19/60—Pleochroic dyes
    • C09K19/603—Anthroquinonic

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Liquid Crystal (AREA)
DE19782815335 1977-04-11 1978-04-10 Pleochroitische farbstoffe und mit diesen verwendbare elektrooptische anzeigevorrichtungen Granted DE2815335A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US78648977A 1977-04-11 1977-04-11

Publications (2)

Publication Number Publication Date
DE2815335A1 true DE2815335A1 (de) 1978-10-12
DE2815335C2 DE2815335C2 (fr) 1988-02-04

Family

ID=25138743

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19782815335 Granted DE2815335A1 (de) 1977-04-11 1978-04-10 Pleochroitische farbstoffe und mit diesen verwendbare elektrooptische anzeigevorrichtungen

Country Status (7)

Country Link
US (1) US4154746A (fr)
JP (1) JPS53126033A (fr)
CH (1) CH639113A5 (fr)
DE (1) DE2815335A1 (fr)
FR (1) FR2387271A1 (fr)
GB (1) GB1602662A (fr)
IT (1) IT1095570B (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4232950A (en) * 1979-02-23 1980-11-11 Minnesota Mining And Manufacturing Company Liquid crystal compositions including pleochroic dye
US4232949A (en) * 1979-02-23 1980-11-11 Minnesota Mining And Manufacturing Company Liquid crystal compositions containing pleochroic dye
US4299720A (en) * 1978-12-21 1981-11-10 Bbc Brown, Boveri & Co., Ltd. Liquid crystal mixture
EP0055989A2 (fr) * 1980-02-26 1982-07-14 Siemens Aktiengesellschaft Cristal liquide à colorant anthraquinonique pléochroique et procédé pour la préparation du colorant
US4428858A (en) 1979-10-02 1984-01-31 Ebauches S.A. Composition based on liquid crystal for electro-optical device
US4466899A (en) * 1981-01-10 1984-08-21 Basf Aktiengesellschaft Dyes for use in liquid crystal mixtures
US4491532A (en) * 1980-09-30 1985-01-01 Siemens Aktiengesellschaft Liquid-crystal mixture with a pleochroic anthraquinone dye, and method for producing such a dye
US4702561A (en) * 1977-04-11 1987-10-27 Minnesota Mining And Manufacturing Company Pleochroic dyes and electro-optical displays therewith

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2822632A1 (de) * 1978-05-24 1979-11-29 Bayer Ag Anthrachinon-derivate
JPS56100885A (en) * 1980-01-17 1981-08-13 Mitsui Toatsu Chem Inc Composition for liquid crystal color display
US4394070A (en) * 1980-07-16 1983-07-19 Minnesota Mining And Manufacturing Company Helichromic compounds and displays
US4565424A (en) * 1980-12-12 1986-01-21 Minnesota Mining And Manufacturing Company Asymmetric dichroic dye molecules having poly(arylazo) linking groups, a bis-substituted aryl thiazyl end group, and another end group
US4514045A (en) * 1981-06-22 1985-04-30 Minnesota Mining And Manufacturing Company Helichromic-smectic liquid crystal compositions and display cells
US4448492A (en) * 1982-12-23 1984-05-15 Minnesota Mining And Manufacturing Company Cycloalkyl-type isotropic dyes for liquid crystal display devices
US4452511A (en) * 1982-12-30 1984-06-05 Minnesota Mining And Manufacturing Company Substituted anthracene-type isotropic dyes for liquid crystal display devices
US4530572A (en) * 1982-12-30 1985-07-23 Minnesota Mining And Manufacturing Company Substituted anthraquinone-type isotropic dyes for liquid crystal display devices
SE464264B (sv) * 1984-02-24 1991-03-25 Esab Ab Optiskt filter foer svetsskyddsglas
CN114989630B (zh) * 2022-06-22 2024-05-28 江苏创拓新材料有限公司 负性二色性染料及其制备方法和显示器件

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE627482C (de) * 1930-10-21 1936-03-16 Ig Farbenindustrie Ag Verfahren zur Darstellung von 1, 4-Diaminoanthrachinon
JPS5942287B2 (ja) * 1972-12-19 1984-10-13 松下電器産業株式会社 色相変調表示装置
US3960751A (en) * 1973-09-19 1976-06-01 Matsushita Electric Industrial Co., Ltd. Electro-optical display element
DE2521357A1 (de) * 1975-05-14 1976-11-25 Hoechst Ag Anthrachinon-bis-amidine und verfahren zu ihrer herstellung

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
WEILMEIER und ZANONI: Applied Physics Letters, Bd. 13, 1968, S.91-92 *

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4702561A (en) * 1977-04-11 1987-10-27 Minnesota Mining And Manufacturing Company Pleochroic dyes and electro-optical displays therewith
US4299720A (en) * 1978-12-21 1981-11-10 Bbc Brown, Boveri & Co., Ltd. Liquid crystal mixture
US4232950A (en) * 1979-02-23 1980-11-11 Minnesota Mining And Manufacturing Company Liquid crystal compositions including pleochroic dye
US4232949A (en) * 1979-02-23 1980-11-11 Minnesota Mining And Manufacturing Company Liquid crystal compositions containing pleochroic dye
US4428858A (en) 1979-10-02 1984-01-31 Ebauches S.A. Composition based on liquid crystal for electro-optical device
EP0055989A2 (fr) * 1980-02-26 1982-07-14 Siemens Aktiengesellschaft Cristal liquide à colorant anthraquinonique pléochroique et procédé pour la préparation du colorant
EP0055989A3 (fr) * 1980-02-26 1982-09-08 Siemens Aktiengesellschaft Cristal liquide à colorant anthraquinonique pléochroique et procédé pour la préparation du colorant
US4363743A (en) 1980-02-26 1982-12-14 Siemens Aktiengesellschaft Liquid crystals having pleochroic dyes
US4402854A (en) * 1980-02-26 1983-09-06 Siemens Aktiengesellschaft Liquid crystals having pleochroic dyes
US4491532A (en) * 1980-09-30 1985-01-01 Siemens Aktiengesellschaft Liquid-crystal mixture with a pleochroic anthraquinone dye, and method for producing such a dye
US4466899A (en) * 1981-01-10 1984-08-21 Basf Aktiengesellschaft Dyes for use in liquid crystal mixtures

Also Published As

Publication number Publication date
GB1602662A (en) 1981-11-11
IT1095570B (it) 1985-08-10
JPS53126033A (en) 1978-11-02
DE2815335C2 (fr) 1988-02-04
FR2387271B1 (fr) 1982-03-26
US4154746A (en) 1979-05-15
JPS6240394B2 (fr) 1987-08-27
IT7822163A0 (it) 1978-04-10
CH639113A5 (de) 1983-10-31
FR2387271A1 (fr) 1978-11-10

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Legal Events

Date Code Title Description
8110 Request for examination paragraph 44
D2 Grant after examination
8364 No opposition during term of opposition
8328 Change in the person/name/address of the agent

Free format text: TAUCHNER, P., DIPL.-CHEM. DR.RER.NAT. HEUNEMANN, D., DIPL.-PHYS. DR.RER.NAT., PAT.-ANWAELTE, 8000 MUENCHEN